Others are barely larger than a grain of sand.

有的仅略大于沙粒。

It is made of little round grains of sand.

是小小的圆形沙粒构成的。

An oyster can produce a pearl by covering a grain of sand with what substance?

牡蛎可以用什么物质覆盖一粒沙子来制造珍珠？

Like coarse grains of sand about 3 millimeters, 550 times smaller than you.

就像粗约3毫米的沙粒，比你小550倍。

And we have the tendency of picturing it somewhat like a grain of sand.

我们可能会将它以图片形式呈现，就像对待一粒沙那样。

Almost like an oyster, creating layers around the grain of sand to make a pearl.

几乎就像牡蛎，围绕着沙粒一层一层制作着珍珠。

One of our comrades swallowed a grain of sand that was highly radioactive. He died.

我们一名同志吞下了一些高度放射性的沙子 他死了。

Which together contain more stars than there are grains of sand on the entire Earth.

其中所包含的恒星数量比整个地球上的沙粒还要多。

But these grains of sand were themselves only broken bits of a still older rock.

但是，这些沙粒，本身又是更古老的石头破碎形成的。

The grains of sand are constantly shifting, but the pads on her feet...

沙地很容易打滑，但它毛茸茸的脚垫。

Every ten billion years one single grain of sand falls to the bottom.

每100亿年才会有一粒沙掉落到沙漏下方。

Each time that ticket hits a jackpot throw a grain of sand into the Grand Canyon.

每当那张彩票中了头奖，就往大峡谷里扔一粒沙子。

Massive and majestic, they glide along the ocean floor without disturbing a single grain of sand.

他们体积庞大而壮实，掠过海床时却不会带起一点儿海沙。

That entire image is about the size of a grain of sand held at arm's length.

整张照片约为手臂距离远的一粒沙子的大小。

And finally, the phrase a grain of sand describes something which is both insignificant yet somehow important.

最后，短语“一粒沙子”描述的是既微不足道又很重要的事物。

He too was a dot, a grain of sand in the near-blinding dazzle of the unobscured sun.

他也是一个点，一粒沙子，在没有被遮挡的太阳的几乎要闪瞎眼的耀眼光芒下。

Imagine an hourglass, filled with one grain of sand for every single particle in the universe.

试想像一个沙漏的每一粒沙都对应到宇宙中的一个粒子。

Although I cannot say the exact amount, the total grains of sand in your hourglass have risen.

虽然我不能说出确切的数量，但你们沙漏中的沙粒总数已经上升了。

The grains of sand are constantly shifting, but the pads on her feet... are furry for maximum traction.

沙粒在不停地移动，可她毛茸茸的脚垫… … 能让耳廓狐获得巨大的抓地力。

If you were that tall, people would be as small to you as grains of sand in your hand.

如果你有那么高的话，人类就会像你手中的沙粒一样渺小了。